<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>03_CSS常用词</title>
    <style>
        h1 {
            color: red;
            color: rgb(255, 0, 0);
            color: rgb(0, 255, 255);
            color: rgb(0, 0, 255);
            color: rgb(255, 255, 0);
            color: rgb(0, 255, 0);
            color: rgb(255, 0, 255);
            color: #ff00ff;
            color: #00ff00;
            color: #0000ff;
            color: #fff;
            color: #000;
            color: #808080;
            color: #0f91;
            color: #f91;
            color: rgba(255, 0, 0, 0.1);
            color: rgba(255, 0, 0, 0.2);
            color: rgba(255, 0, 0, 0.3);
            color: rgba(255, 0, 0, 0.4);
            color: rgba(255, 0, 0, 0.5);
            color: rgba(255, 0, 0, 0.6);
            color: rgba(255, 0, 0, 0.7);
            color: rgba(255, 0, 0, 0.8);
            color: rgba(255, 0, 0, 0.9);
            color: rgba(255, 0, 0, 1);
        }

        .d1 {
            width: 500px;
            height: 500px;
            background-image: linear-gradient(160deg, red, orange, yellow, green, cyan, blue, pink);
        }

        .d2 {
            width: 50px;
            height: 100px;
            background: #000;
            background-image: url(../day02/img/mr.png);
            background-size: 100% 100%;
        }

        .d3 {
            height: 300px;
            width: 500px;
            background-image: url(../day02/img/mr.png);
            background-repeat: no-repeat;
            background-position: 50px 0;
            background-position: 0 50px;
            background-position: 100px 100px;
            background-position: -20px -20px;
            background-position: left bottom;
            background-position: center;
            background-position: right bottom;
            background-position: 50% 50%;
        }
    </style>
</head>
<body>
<h1>测试颜色</h1>
<div class="d1"></div>
<div class="d2"></div>
<div class="d3"></div>
</body>
</html>